"We're taking the preseason pretty seriously as far as getting ready for the regular season, and it's showing."

Houston Texans wide receiver Andre Johnson (80) falls forward as he is tackled by San Francisco 49ers safety Dashon Goldson (38) in the first quarter of a preseason NFL football game in San Francisco, Saturday, Aug. 27, 2011. (AP Photo/Marcio Jose Sanchez)

Houston Texans wide receiver Andre Johnson (80) falls forward as he is tackled by San Francisco 49ers safety Dashon Goldson (38) in the first quarter of a preseason NFL football game in San Francisco, Saturday,

Houston Texans wide receiver Andre Johnson (80) falls forward as he is tackled by San Francisco 49ers safety Dashon Goldson (38) in the first quarter of a preseason NFL football game in San Francisco, Saturday, Aug. 27, 2011. (AP Photo/Marcio Jose Sanchez)

Houston Texans wide receiver Andre Johnson (80) falls forward as he is tackled by San Francisco 49ers safety Dashon Goldson (38) in the first quarter of a preseason NFL football game in San Francisco, Saturday,

"Hopefully, he's ready," Winston said about Foster. "If not, then Derrick and Ben are going to be ready and whoever else might be back there, so we've just got to keep working. Minnesota's next, but after that, all of our attention is going to go to the Colts."

The Texans got off to a bad start. On their first series, Matt Schaub was intercepted by linebacker Ahmad Brooks, who returned it 13 yards for a touchdown when the game was only 9 seconds old.

"You come into a game, and you have a plan for how you want it to go, and, boom, the first play doesn't go how you want," Schaub said. "We had some different assignments up front for the screen game and how we were doing it this week, and we had some miscommunication. It happens, and you've got to move on and make the next play."

Schaub threw the ball right to Brooks, who was surprised but managed to hold the ball and take off for the easy touchdown.

"We put them in a hole early," Schaub said about his defense. "We were able to make enough plays throughout the first half. We left a lot of points out there as well with the two fumbles. We've got to clean those things up. I feel good about how guys reacted to those mistakes."

When Foster went down, Schaub relied on Ward and Tate.

"I really don't know what happened," Schaub said about Foster's injury. "I just know that something happened, and it's up to the trainers and doctors. It's definitely huge for us. He's a big part of what we do offensively in the run game and pass game, so we need to have him out there."

"I don't think there's a lot of wasted plays, and I don't think we're missing a lot of the big plays," Winston said. "I think when they're there to make, we're making them, and that's important.

"You're not always going to have the perfect play called, so when they're there and the perfect play call comes down to that defense, you've got to make the big play. I think right now we're doing that, and we've got to keep doing it."